mirror of https://github.com/mpv-player/mpv
158 lines
5.2 KiB
C
158 lines
5.2 KiB
C
/*
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** FAAD2 - Freeware Advanced Audio (AAC) Decoder including SBR decoding
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** Copyright (C) 2003 M. Bakker, Ahead Software AG, http://www.nero.com
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**
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** This program is free software; you can redistribute it and/or modify
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** it under the terms of the GNU General Public License as published by
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** the Free Software Foundation; either version 2 of the License, or
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** (at your option) any later version.
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**
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** This program is distributed in the hope that it will be useful,
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** but WITHOUT ANY WARRANTY; without even the implied warranty of
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** MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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** GNU General Public License for more details.
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**
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** You should have received a copy of the GNU General Public License
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** along with this program; if not, write to the Free Software
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** Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA.
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**
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** Any non-GPL usage of this software or parts of this software is strictly
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** forbidden.
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**
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** Commercial non-GPL licensing of this software is possible.
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** For more info contact Ahead Software through Mpeg4AAClicense@nero.com.
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**
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** $Id: syntax.h,v 1.37 2003/09/24 19:55:34 menno Exp $
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**/
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#ifndef __SYNTAX_H__
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#define __SYNTAX_H__
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#ifdef __cplusplus
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extern "C" {
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#endif
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#include "decoder.h"
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#include "drc.h"
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#include "bits.h"
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#define MAIN 1
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#define LC 2
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#define SSR 3
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#define LTP 4
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#define HE_AAC 5
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#define LD 23
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#define ER_LC 17
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#define ER_LTP 19
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#define DRM_ER_LC 27 /* special object type for DRM */
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/* header types */
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#define RAW 0
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#define ADIF 1
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#define ADTS 2
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/* SBR signalling */
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#define NO_SBR 0
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#define SBR_UPSAMPLED 1
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#define SBR_DOWNSAMPLED 2
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#define NO_SBR_UPSAMPLED 3
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/* DRM channel definitions */
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#define DRMCH_MONO 1
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#define DRMCH_STEREO 2
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#define DRMCH_SBR_MONO 3
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#define DRMCH_SBR_LC_STEREO 4
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#define DRMCH_SBR_STEREO 5
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/* First object type that has ER */
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#define ER_OBJECT_START 17
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/* Bitstream */
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#define LEN_SE_ID 3
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#define LEN_TAG 4
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#define LEN_BYTE 8
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#define EXT_FIL 0
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#define EXT_FILL_DATA 1
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#define EXT_DATA_ELEMENT 2
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#define EXT_DYNAMIC_RANGE 11
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#define ANC_DATA 0
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/* Syntax elements */
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#define ID_SCE 0x0
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#define ID_CPE 0x1
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#define ID_CCE 0x2
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#define ID_LFE 0x3
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#define ID_DSE 0x4
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#define ID_PCE 0x5
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#define ID_FIL 0x6
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#define ID_END 0x7
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#define ONLY_LONG_SEQUENCE 0x0
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#define LONG_START_SEQUENCE 0x1
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#define EIGHT_SHORT_SEQUENCE 0x2
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#define LONG_STOP_SEQUENCE 0x3
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#define ZERO_HCB 0
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#define FIRST_PAIR_HCB 5
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#define ESC_HCB 11
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#define QUAD_LEN 4
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#define PAIR_LEN 2
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#define NOISE_HCB 13
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#define INTENSITY_HCB2 14
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#define INTENSITY_HCB 15
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int8_t GASpecificConfig(bitfile *ld, mp4AudioSpecificConfig *mp4ASC,
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program_config *pce);
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uint8_t adts_frame(adts_header *adts, bitfile *ld);
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void get_adif_header(adif_header *adif, bitfile *ld);
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/* static functions */
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static uint8_t single_lfe_channel_element(faacDecHandle hDecoder,
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element *sce, bitfile *ld,
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real_t *spec_coef);
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static uint8_t channel_pair_element(faacDecHandle hDecoder, element *cpe,
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bitfile *ld,
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real_t *spec_coef1, real_t *spec_coef2);
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static uint8_t coupling_channel_element(faacDecHandle hDecoder, bitfile *ld);
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static uint16_t data_stream_element(faacDecHandle hDecoder, bitfile *ld);
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static uint8_t program_config_element(program_config *pce, bitfile *ld);
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static uint8_t fill_element(faacDecHandle hDecoder, bitfile *ld, drc_info *drc
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#ifdef SBR_DEC
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,uint8_t sbr_ele
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#endif
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);
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static uint8_t individual_channel_stream(faacDecHandle hDecoder, element *ele,
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bitfile *ld, ic_stream *ics, uint8_t scal_flag,
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int16_t *spec_data);
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static uint8_t ics_info(faacDecHandle hDecoder, ic_stream *ics, bitfile *ld,
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uint8_t common_window);
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static uint8_t section_data(faacDecHandle hDecoder, ic_stream *ics, bitfile *ld);
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static uint8_t scale_factor_data(faacDecHandle hDecoder, ic_stream *ics, bitfile *ld);
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static void gain_control_data(bitfile *ld, ic_stream *ics);
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static uint8_t spectral_data(faacDecHandle hDecoder, ic_stream *ics, bitfile *ld,
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int16_t *spectral_data);
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static uint16_t extension_payload(bitfile *ld, drc_info *drc, uint16_t count);
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#ifdef ERROR_RESILIENCE
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uint8_t reordered_spectral_data(faacDecHandle hDecoder, ic_stream *ics,
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bitfile *ld, int16_t *spectral_data);
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#endif
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static uint8_t pulse_data(ic_stream *ics, pulse_info *pul, bitfile *ld);
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static void tns_data(ic_stream *ics, tns_info *tns, bitfile *ld);
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static void ltp_data(faacDecHandle hDecoder, ic_stream *ics, ltp_info *ltp, bitfile *ld);
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static uint8_t adts_fixed_header(adts_header *adts, bitfile *ld);
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static void adts_variable_header(adts_header *adts, bitfile *ld);
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static void adts_error_check(adts_header *adts, bitfile *ld);
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static uint8_t dynamic_range_info(bitfile *ld, drc_info *drc);
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static uint8_t excluded_channels(bitfile *ld, drc_info *drc);
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#ifdef __cplusplus
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}
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#endif
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#endif
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